Improvement in agitator-wheel for potato-diggers



J, HALL, Jr; Potato Digger. N0.102,813. Patented May'IO, 1870.

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amt sal JOHN HALL, JR. OF TEMPERANOEVILLE, PENNSYLVANIA.

Letters Patent No. 102,813, dated May 10, 1870.

IMPROVEMENT IN AGITATOR-WHEBL FOR POTATO-DIGG-ERS,

The Schedule referred to in these Letters Patent and snaking part of the'same.

To all whom it may concern.-

Be it known that I, JOHN HALL, Jr., of Temperanceville, in the county ofAllegheny and State of Pennsylvania, have invented a certain new anduseful Improvementin Agitator- Wheel for Potato-Diggers; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being. had to the accompanying drawing and to theletters of reference marked thereon.

The nature of my invention consists in providing the agitating-wheel ofpotato-diggers with acompouud pivot bearing, constructed and arranged ashereinafter described. k

To enable others skilled in the art to make and use my invention, 1 willproceed to describe its construction and operatiom In the accompanyingdrawing which forms part of my specification- Figure 1' is a sideelevation of my improvement in agitating-wheel for the separator ofpotato-diggers.

Figure 2 is atransverse section of the same, when out through at line yof fig. 1.

In the accompanying drawing,

The wheel A isprovided with a series of arms 0,

- which are used for raising the separator of a potatodigger andallowit. to drop suddenly, and thereby separate the earth from thepotatoes by the jarring action thus imparted to the separator.

This wheel often becomes inoperative by becoming fixed on its axis,caused by wet earth and weeds getting in and around the axis and in thebore of the hub of the wheel.

To prevent the wheel from becoming fixed on its axis, I have providedthe wheel A-with hubs B B, which are, fitted into a recess made ineachside of the wheel, which is so arranged with relation to the hubs BB thatit will revolve upon them. v

Through the hubs B B and wheel A passes an axle 0, upon which theyrevolve. By thus pivoting the wheel A upon the axle O, the hubs B Bjwillprevent the dirt and other matter fi'omgetting into the center bearingof the wheel, and, in case the hubs should become wedged upon the axleO, the wheel A will rotate upon 'the hubs B B; and, in case the hubs B Bshould become fixed or wedged in the wheel A, and are loose upon theaxle C, then the wheel A and its hubs willrotzite together, thus makingit almost impossible for the wheel A to ever become inoperative.

Having thus described the nature, construction, and operation of .myimprovement,

What I claim as of my invention is- The agitating-wheel for theseparator of a potatodiggel, with detached hubs, which are so arrangedthat the hubs and wheels will rotate independentlyof each other upon theaxle C, substantially as herein described aud tor the purpose'set forth.

- JOHN HALL, JR. Witnesses A. O. J OHNSTOX, J AS. G..THOMPSON.

